Abstract
Catalytic dechlorination of 4-chlorobiphenyl (4-CBp) and chlorobenzene (CBz) was carried out at 35°C in a solution of NaOH in 2-propanol in the presence of a supported palladium catalyst (Pd/C or Pd/Al2O3) . In the individual substrate reaction, the initial dechlorination rate of CBz was much faster than that of 4-CBp by a factor of 3.4. When they were mixed, the dechlorination rate of CBz was suppressed and was slower than that of 4-CBp. Since 4-CBp preferably adsorbs on the catalyst in the presence of CBz, the adsorption abilities of substrates seem to affect the reaction rate in the competitive reaction.
